Should i be concerned?!

My daughter turned one in january and we are transitioning her from formula to milk. She recently had the stomach flu (not sure if that means anything) but i would like some input/experiences you may have come across. I have read things obviously that would worry me as well as things that the poop would be paper white to be concerning and the whites of her eyes would be yellow?

Please help. I dont want to worry!

(The picture is slightly darker than in person)